<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		
		<script>
			
			var stu2 = {
				id:2,
				name:"王五",
				age:19
			}
			
			for(var i in stu2){
				document.write(i + "," + stu2[i] + "<br/>")
			}
			
			with(stu2){
				document.write(id + "," + name + "," + age);
			}
			
		</script>
		
		
		
	</body>
</html>